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Diffstat (limited to 'pfinet/linux-src/include/linux/coda_proc.h')
| -rw-r--r-- | pfinet/linux-src/include/linux/coda_proc.h | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/pfinet/linux-src/include/linux/coda_proc.h b/pfinet/linux-src/include/linux/coda_proc.h new file mode 100644 index 00000000..7c4ca8a0 --- /dev/null +++ b/pfinet/linux-src/include/linux/coda_proc.h @@ -0,0 +1,145 @@ +/* + * coda_statis.h + * + * CODA operation statistics + * + * (c) March, 1998 + * by Michihiro Kuramochi, Zhenyu Xia and Zhanyong Wan + * zhanyong.wan@yale.edu + * + */ + +#ifndef _CODA_PROC_H +#define _CODA_PROC_H + +void coda_sysctl_init(void); +void coda_sysctl_clean(void); +void coda_upcall_stats(int opcode, unsigned long jiffies); + +#include <linux/sysctl.h> +#include <linux/coda_fs_i.h> +#include <linux/coda.h> + +/* these four files are presented to show the result of the statistics: + * + * /proc/fs/coda/vfs_stats + * upcall_stats + * permission_stats + * cache_inv_stats + * + * these four files are presented to reset the statistics to 0: + * + * /proc/sys/coda/vfs_stats + * upcall_stats + * permission_stats + * cache_inv_stats + */ + +/* VFS operation statistics */ +struct coda_vfs_stats +{ + /* file operations */ + int file_read; + int file_write; + int file_mmap; + int open; + int release; + int fsync; + + /* dir operations */ + int readdir; + + /* inode operations */ + int create; + int lookup; + int link; + int unlink; + int symlink; + int mkdir; + int rmdir; + int rename; + int permission; + int readpage; + + /* symlink operatoins*/ + int follow_link; + int readlink; +}; + +struct coda_upcall_stats_entry +{ + int count; + unsigned long time_sum; + unsigned long time_squared_sum; +}; + + + +/* cache hits for permissions statistics */ +struct coda_permission_stats +{ + int count; + int hit_count; +}; + +/* cache invalidation statistics */ +struct coda_cache_inv_stats +{ + int flush; + int purge_user; + int zap_dir; + int zap_file; + int zap_vnode; + int purge_fid; + int replace; +}; + +/* these global variables hold the actual statistics data */ +extern struct coda_vfs_stats coda_vfs_stat; +extern struct coda_permission_stats coda_permission_stat; +extern struct coda_cache_inv_stats coda_cache_inv_stat; +extern int coda_upcall_timestamping; + +/* reset statistics to 0 */ +void reset_coda_vfs_stats( void ); +void reset_coda_upcall_stats( void ); +void reset_coda_permission_stats( void ); +void reset_coda_cache_inv_stats( void ); + +/* some utitlities to make it easier for you to do statistics for time */ +void do_time_stats( struct coda_upcall_stats_entry * pentry, + unsigned long jiffy ); +/* +double get_time_average( const struct coda_upcall_stats_entry * pentry ); +double get_time_std_deviation( const struct coda_upcall_stats_entry * pentry ); +*/ +unsigned long get_time_average( const struct coda_upcall_stats_entry * pentry ); +unsigned long get_time_std_deviation( const struct coda_upcall_stats_entry * pentry ); + +/* like coda_dointvec, these functions are to be registered in the ctl_table + * data structure for /proc/sys/... files + */ +int do_reset_coda_vfs_stats( ctl_table * table, int write, struct file * filp, + void * buffer, size_t * lenp ); +int do_reset_coda_upcall_stats( ctl_table * table, int write, + struct file * filp, void * buffer, + size_t * lenp ); +int do_reset_coda_permission_stats( ctl_table * table, int write, + struct file * filp, void * buffer, + size_t * lenp ); +int do_reset_coda_cache_inv_stats( ctl_table * table, int write, + struct file * filp, void * buffer, + size_t * lenp ); + +/* these functions are called to form the content of /proc/fs/coda/... files */ +int coda_vfs_stats_get_info( char * buffer, char ** start, off_t offset, + int length, int dummy ); +int coda_upcall_stats_get_info( char * buffer, char ** start, off_t offset, + int length, int dummy ); +int coda_permission_stats_get_info( char * buffer, char ** start, off_t offset, + int length, int dummy ); +int coda_cache_inv_stats_get_info( char * buffer, char ** start, off_t offset, + int length, int dummy ); + + +#endif /* _CODA_PROC_H */ |